Sienna Miller Shows Raw Emotion in New Music Video

Sienna Miller is trapped in a Prada store – in a hospital gown. But don't worry, her fashion meltdown is just an act for a new music video.

In the seven-minute video for the British band The Hours' song "See The Light," the 26-year-old actress escapes the designer shop before proclaiming in therapy, "Death feels like the safest place for me right now."

Raw and emotional, she runs barefoot through the streets, is confronted by disemboweled cows, trashes a hospital room and finally, in the unremitting grip of the breakdown, crawls along a country road.

"It's a song about struggle and addiction and fear and darkness … and these guys have brought it to life; the song and the film work perfectly together, it's band on," The Hours lead singer Ant Genn said in a statement.

The video was shot by director Tony Kaye, famed for his decade-old American History X, which earned Edward Norton a nomination for an Academy Award.

The actress, who was recently spotted visiting Italy again with boyfriend Balthazar Getty, has several times been spotted wearing the band's t-shirts over the past year.

The video was shot roughly two months ago and Miller is "friends with a number of the people involved in the project," a pal of Miller's tells PEOPLE.

On Oct. 29 the band posted a blog about the clip but didn't reveal the identity of the video's star: "We all think it's a bit special. Hope you like what you hear!"

The video concludes with a despairing Miller saying, "Break open my head then and fix it. I just feel panicked and sick and full of dread. It's about time I faced the truth. Somewhere within all of the darkness there is light and I need to find it."